Plate-holding device.



E.VV.COOPBR.

PLATE HOLDING DEVICE.

APPLICATION FILED JUNE 11, 1912.

ll i fifififim Patented Feb. 16, 1915.

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ELLIS W. COOPER, OF NEW YORK, N. Y., ASSIGNOR TO B. HOE AND 00., 015 NEWYORK,

N. Y., A CORPORATION OF NEW YORK.

PLATE-HOLDING DEVICE.

masses;

Specification of Letters Patent.

Patented Feb. in, NM,

Application filed June 11, 1912. Serial No. 70%,961.

To all whom it may concern.

Be it known that l, ELLIS W. Coornn, a citizen of the United States,residing at New York, county of New York, and State of New York, haveinvented certain new and useful Improvements in Plate-Holding -Devices,fully described and represented in is usual, after the plates have beenlocked in position to take a trial impression, to ascertain Whether eachplate is in proper register with respect to the other plates in the row.When any plate is not in proper register it'is necessary, in machines asnow ordinaril constructed, to shift the position of the p ate which isout of register, and where the construction is such that the plates aresimultaneously locked in position, 1t is necessary to unlock all theplates in the row to bring any improperly positioned plate intoregister. This requires considerable time and is objectionable forotherreasons.

It is the object of this invention to pro-' duce an improvedconstruction for locking up a row of plates on a cylinder, theconstruction being such as to permit the sidewise adjustment of anyplate, that is, adjustment in the direction of the axis of the cylinder,without disturbing the position of any other plate. 7. l

A. t'urther object of theinvention is to produce an improvedconstruction for loclo ing up a row of plates, the constructionincluding a holder base located between two adjacent plates and movablesidewise, the base being provided with holders for adjacent plates.

The invention extends to certain other improvements in details ofconstruction which need not be here specifically pointed out, but

which will appear hereinafter.

With these and other objects in view, the invention consists in certainconstructions, and in certain parts, improvements and combinations aswill be hereinafter fully described and then specificall pointed out.

Referring to the drawings: i-igure 1 illus trates in plan view a part ofthe circumference of a printing cylinder provided with the improvedplate holding construction.

Fig. 2 is a sectional view on the line 2-,2 of Fig. 1. Fig. 3 is asection, on an enlarged scale, on the line 33 of Fig. 1;.

Referring to-the accompanying drawings, the improved construction isillustrated in connection with a cylinder of the tubular type in which 1indicates the outer shell of t e cylinder, 2 the tubular core, the outershell and core being connected by ribs,.one of which is indicated at 4.The cylinder is provided with the usual bearer ringnindicated at '5. Theparticular construction of 1 cylinder has no special reference to thein.-

vention, and any form ofcylinder desirable mag be employed.

onstructions embodying the lnvention will include, in connection withcomple,

mentary holding devices, a holder base which is movable sidewise, viz.,in thedirection of the axis of the cylinder, which is arranged betweenadjacent plates and which is provided with holders for said plates. Theholder base and the means for holdin it in position may be variouslyconstructs In the particular construction illustrated the cylinder isprovided. with a series 0 grooves 6 which are planed in the outer shellof the cylinder, and extends from end to end thereof. These-groovesshould have vertical sides, as this constructionconduces to cheapness ofmanufacture. The particular construction illustrated includes, further,a plurality of spaced blocks 7, these blocks being located in the.grooves. When such blocks are employed in connection with,the holderbase, a part ct them, at least, have overhanging ends, as indicated at8, these ends being provided by undercuttin the blocks. [is shown, theblocks are hedin position by screws 9 which are tapped into the bottomsof the grooves; The. overhan ing ends of these blocks when such bloc sare employed, serve tomamtann 1n positlon the sidewise movableholderbase, indicated at 10. This holderbase is .cut. a-wavto pro violeprojecting ends 10 which underlie the projecting ends 8 ot'the blocks.Means should be provided ion maintaining: the

Jltltl holder base in position in such a way that it may have thesidewise movement referred to. The means employed may be such as to'frictionally hold the base in position. 'In

the particular construction illustrated, this is accomplished bychanneling out the base of the block, as indicated at 11, see Fig. 3,and locating a plate spring 12 therein, the spring being secured to thebase byascrew,or in any other suitable manner. When the base is forcedunder the overhanging ends of the supporting blocks, the spring 12 isplaced under tension and thus frictionally holds the base in position,although permitting it to have a sidewise movement.

In the particular construction illu'strated, the cylinder is constructedto carry four plates abreast, the drawings illustrating a little 'morethan half of these plates. In this construction, there is provided aplurality of centrally disposed blocks 13 which are provided withcomplementary plate clamps 14, these clamps q being slidably mounted ingrooves 15. Similar plate clamps 16 are slidable in grooves 17 in theholder base. These plate clamps are of a well-known two-partconstruction, the parts being fastened together by screws 18, the baseof the clamps being truncated and the grooves being undercut, so thatthe tightening of the screws 18 draws the two parts of the clampstogether. The usual margin bars 19 are provided.

The best constructions embodying the invention will include means forsimultaneously looking a plurality of plates of the row. As a rule wherethe cylinders, as in the construction shown, are arranged to carry fourplates abreast, the locking up devices are located at each end of thecylinder. In the particular construction illustrated, these locking updevices include a screw 20 carrying a movable clamp 21, the inner end ofthe screw abutting against the outer block 7 of the row. The screwisprovided with a notched wheel 22, the outer end of'the screw extendingslightly beyond the wheel, as at 23, and engaging a socketed block 24secured in the groove 6. A locking device, comprising a ball 25 impelledagainst the notched wheel 22 by a spring 26, may be employed to hold thescrew in adjusted position.

The operation of the construction will be readily understood from theforegoing description.

Referring more particularly to the drawings, the inner set of plates canbe placed on the cylinder and the endwise movable bases slid to theright, temporarily locking these plates in position. The machine can bethen turned over to see if the plates are accurately positioned, and ifthis is found to be the case, the outer set of plates can be placed inposition and locked up by turning the screws at the end of the cylinder.The position of the plates can now be proved by again turning over'thecylinder. If any plate is found to be out of position that plate can beadjusted by loosening the screws 18 in the clamps at its opposite ends,and this can be done without disturbing the position of any other platein the row. This is of great advantage, particularly where the cylinders'carry a plurality of plates arranged in a row. The fact that themovable base may be slid sidewise to hold the inner set of plates inposition temporarily is also of great advantage, as it enables theposition of this inner set to be proved independently of the outer set.Further, the construction permits of the simultaneous locking up of theplates as before described. The construction also has the advantage ofcheapness of manufacture. The grooves in the cylinder can be readilymilled therein and the supporting blocks cheaply made and readilypositioned in the grooves.

Changes and variations may be made in the construction by which theinvention is carried into elfect. The invention claimed,

therefore, is not to be confined to the parparallel to its axis, ofasidewise movable base located between adjacent plates, holders for saidadjacent plates carried by the base and adjustable sidewise on it, andmeans including suitable complementary plate holders for simultaneouslylocking up a plurality of plates of therow.

3. The combination with a cylinder constructed to carry a row of platesarranged parallel 'to its axis, of a sidewise movable base locatedbetween adjacent plates, holders for said adjacent plates carried by thebase and adjustable sidewise on it, and means including suitablecomplementary adjustable plate holders for simultaneously locking up aplurality of plates of the row.

4. The combination with a cylinder, of blocks arranged parallel to theaxis of the cylinder and spaced apart, said blocks having overhangingends, a base in the space and movable sidewise therein, said baseunderlying said overhanging ends, a plate holder carried by the base,and complementary late holding means.

5. he combination with a cylinder, of

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I niaaaaa blocks arranged parallel to its axis and spaced apart, saidblocks having overhang ing ends, a base in the space and movablesidewise therein, said base underlying said overhanging ends, means tbrtrictionally holding the base against said ends, a plate holder carriedby the base, and complementary plate holding devices.

6. The combination with a cylinder, of

blocks arranged parallel to its axis and spaced apart, said blockshaving overhang ing ends, a base in the space and movable sidewisetherein, said base underlying said' overhanging ends, a spring forfrictionally holding the base against said ends, a plate holder carriedby the base, and complementary plate holding devices.

7. The combination with a plate cylinder having a plurality of blocksarranged parallel to the axis of the cylinder and spaced apart, a set ofcentrally arran ed adjustable plate holders, a base arranged in thespace between the blocks and movable sidewise therein, adjustable'plateholders carried by thebase and a sidewise movable plate holder arrangedto engage the outer side of an outer plate, and means for moving said"sidewise movable plate holder into locking position.

8. The combination with a plate cylinder having a plurality of blocksarranged parallel to the axis of the cylinder an spaced apart, a set ofcentrally arranged adjustable plate holders, a base arrange in the spacebetween the blocks and movable sidewise therein, adjustable plateholders carried by the base and a sidewise movable plate holder til lid

arranged to engage the outer side of an outer plate, means for movingsaid sidewise movable plate holder into locking position, and means forfrictionally holding the base in position. I j

9. The combination with a cylinder, of blocks arranged parallel to theaxis Of the cylinder and spaced apart, said blocks having overhangingends, a base frlctionally held in the space between'the blocks andunderlying the end thereof, a set oi adjustable centrally arranged plateholders, plate.

holders for adjacent plates carried by the base and adjustable thereon,a holder for engaging the outer side of the outer plate, and means forforcing the holder into locking position; L

10. The combination with a cylinder, of blocks arranged parallel to theaxis of the cylinder and spaced apart, said blocks havin he d by aspring in, the space between the overhanging ends, a base trictionallyblocks and underlying said overhanging ends, a set of adjustablecentrally arranged plate holders, plate holders for adjacent platescarried by the plate and adjustable thereon, a holder for engaging theouter side or the outer plate, and means for forcing the holder intolocking position.

ll. The combination with a cylinder provided with rows of blocks, saidrows being parallel to each other and the axis of the cylinder, of asidewise movable base located between two adjacent blocks'in each row,sidewise adjustable plate holders carried by the base forthe plates onthe adjacent suritaces, and complementary plate holding de- 12. Thecombination with a cylinder provided with rows of grooves parallel toeach other and the axis of the cylinder, of rows of spaced blocks in thegrooves, an endwise movable base supported between two adjacent blocksin each lbw, sidewise adjustable plate holders carried by the base forthe plates on adjacent surfaces, and complementary plate holding devices13. The combination with a cylinder pro' vided with rows of groovesparallel to each other and the axis of the cylinder, said grooves havingvertical sides, of rows of spaced blocks, in the grooves at least two ofsaid blocks having adjacent overhanging ends, a sidewise movable baseunderlying said ends and tri ctionally held in position, sidewiseadjustable plate holders carried by the base for the plates overlyingadjacent blocks, and complementary plate holding devices.

v14L. The combination with a cylinder provided with rows of groovesparallel to each other and the axis of the cylinder, a plurality ofblocks in each, groove, some of said blocks having the ends adjacent toeach other overhanging, a holder block located in one of the spaces in arow and hav ng adjustable plate holders thereon, a sldewise movable basefrictionally held in position beneath the overhanging ends of the blocksin each row, recessed sidewlse ad ustable plate holders carried, by thebase, and complementary plate holding devices.

In testimony whereof, have hereunto sets my hand, in the presence of twosubscribing witnesses.

